Organisers of the Southern North Sea conference in Norwich this week say adverse weather is set to cause transport disruption for the event.
A yellow weather warning of snow and sub-zero temperatures has been issued by the met office from today through until Wednesday.
East of England Energy Group (EEEGR), which organises the event, says it is “evaluating the situation” but is confident the two-day event will still go ahead.
Train operators Abellio Greater Anglia have announced numerous service cancellations due to large amounts of snow forecast, while reduced trains are in place with London and Cambridge.
EEEGR says the venue of Norfolk Showground has a rescue and recovery service to get vehicles off the site if they are stuck which can be called in at short notice.
Meanwhile, they are asking delegates to allow extra time for journeys and to keep checking weather forecasts and travel news.
The two-day SNS Conference is due to begin on Wednesday.